using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using CrystalDecisions.Shared;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Web;

public partial class _Default : System.Web.UI.Page 
{
    //水晶报表对象
    private ReportDocument myReport;

    private void ConfigureCrystalReports()
    {   
       

        // 定义ReportDocument对象，装载Crystalreport1.rpt
        myReport = new ReportDocument();
        string reportPath = Server.MapPath("Crystalreport1.rpt");
        myReport.Load(reportPath);

        
        //定义水晶报表的数据库连接信息
        ConnectionInfo connectionInfo = new ConnectionInfo();
        connectionInfo.DatabaseName = "user";
        connectionInfo.UserID = "pwd";
        connectionInfo.Password = "****";
        connectionInfo.ServerName = "myoraServer";
        
        //将数据库信息传递给报表
        SetDBLogonForReport(connectionInfo, myReport);
         
        //把模板对象赋给报表前端呈现控件CrystalReportViewer1
        CrystalReportViewer1.ReportSource = myReport;
    }

    private void SetDBLogonForReport(ConnectionInfo connectionInfo, ReportDocument reportDocument)
    {
        Tables tables = reportDocument.Database.Tables;
        
        foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables)
        {
            TableLogOnInfo tableLogonInfo = table.LogOnInfo;
            tableLogonInfo.ConnectionInfo = connectionInfo;
            table.ApplyLogOnInfo(tableLogonInfo);

        }
    }
// 注意：将代码防到Page_Init或Page_Load 中
//VS2008必须放到Page_Init中
    private void Page_Init(object sender, EventArgs e)
    {
        ConfigureCrystalReports();
    }
}

//主报表
myReport.SetDatabaseLogon("user", "pwd", "server", "db");
//子报表
myReport.Subreports[0].SetDatabaseLogon("user", "pwd", "server", "db");